<span>
    <% if user.user_extensions && user.user_extensions.brief_introduction && !user.user_extensions.brief_introduction.empty? %>
        <%= user.user_extensions.brief_introduction %>
    <% else%>
        这个小伙伴很懒，什么都没留下~
    <% end %>
</span>
<% if User.current == user%>
    <%= link_to image_tag("../images/signature_edit.png",width:"12px", height: "12px"), "javascript:void(0);", :onclick => "show_edit_user_introduction();"%>
<% end %>
